Is it a replacement for Android and Chrome OS[4]? Good question. It's not clear what Google plans for it. We do know it runs on Google's high-end, Chrome-OS powered Pixelbook[5]. You can also install it on Acer Switch 12 and Intel NUC and, eventually, on a Raspberry Pi 3. ...

First, it's built on the Zircon micro-kernel[6]. Besides the microkernel, it includes a small set of userspace services, drivers, and libraries. These are used to boot the system, talk to hardware, load userspace processes and run them, and not much more.